Eco start-up company Sungevity is launching a new web application on Earth Day (three days away, people!) that will take the guess work out of solar panel installations. Enter your address on Sungevity's website and satellite-imaging software will zoom in on your home, calculate your roof's dimensions, select the right sized solar arrays and calculate how much money you'll save on energy costs.

Once you place an order, the site will ship one of five off-the-shelf prepackaged solar arrays and dispatch an installation crew to your door. An on-line database tracks local building and permit requirements and sends the necessary forms to you for you to fill out.

This is great news for everyone who has ever wanted to jump on the solar bandwagon, but was afraid to because of the headaches that come from any large home project. The system will also help make everything cheaper, since half of a solar system's costs are from installation hassles.

Unfortunately, the service is limited to California addresses right now, but if business is good, we could probably count on a nationwide roll-out in the near future. [Green Wombat via Wired]